<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <script src="../js/vue.js"></script>
</head>

<body>
    <div id ="app">
        <h2>人员列表</h2>
        <input type="text" placeholder="请输入名字" v-model="keyWord">
        <button @click="sortType=2">年龄升序</button>
        <button @click="sortType=1">年龄降序</button>
        <button @click="sortType=0">原顺序</button>
        <ul>
            <li v-for="(p, index) of filPersons" :key="p.id">
                {{p.name}}-{{p.age}}-{{p.sex}}
            </li>
        </ul>
    </div>

    <script>
        //创建Vue实例,得到 ViewModel
        const vm = new Vue({
            el: '#app',
            // 自定义属性
            data: {
                keyWord:'',
                persons:[
                    { id:'001', name:'马冬梅', age:20, sex:'女' },
                    { id:'002', name:'周冬雨', age:29, sex:'女' },
                    { id:'003', name:'周杰伦', age:30, sex:'男' },
                    { id:'004', name:'温兆伦', age:21, sex:'男' }
                ],
                sortType:0      // 0原顺序  1降序   2升序
            },
            // 自定义计算属性
            computed: {
                filPersons(){
                    let filterResult = this.persons.filter((p)=>{
                        return p.name.indexOf(this.keyWord) !== -1
                    })
                    // 判断是否需要排序
                    if (this.sortType !== 0) {
                        // 注意：sort排序写法
                        filterResult.sort((a,b)=> {
                            return this.sortType === 1 ? b.age-a.age : a.age-b.age
                        })
                    }
                    return filterResult
                }
            },
            // 自定义方法
            methods: {}
        });
    </script>
</body>
</html>